ANSI INCITS 49-1975 Character Set for Optical Charater Recognition (OCR-B).pdf

1、kNSI INCITS 49-1975 (R2002) (formerly ANSI X3.49-1975 (R2000) ADOPTED FOR USE BY THE FEDERAL GOVERNMENT WA- b PUB 32 SEE NOTICE ON INSIDE Character Set for Optical Character Recognition (OCR-B) Developed by Where IT all begins A N me rican Approval of an American National Standard requires verificat

2、ion by ANSI that the requirements for due process, consensus, and other criteria for ational approval have been met by the standards developer. Standard Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materi

3、ally affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely volu

4、ntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards a

5、nd will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be ad-

6、 dressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, re

7、vise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by American National Standards Institute 11 West 42nd Street, New York, New York 10036 Copyright O1 9

8、75 by American National Standards Institute All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America Foreword (This Foreword is not a part

9、 of American National Standard Character Set for Optical Character Recognition (OCR-B), X3.49-1975 .) This standard presents an alphanumeric character set for use in optical character recognition (OCR) systems. There are two standard character sets for machine printing: OCR-A (American National Stan

10、dard X3.17-1974), and OCR-B (American National Standard X3.49-1975). Both sets include numerals, uppercase and lowercase characters, and special symbols. In the design of character shapes for OCR it is possible to exchange conventional appearance for OCR reading performance (for example, insensitivi

11、ty to degradation of printing; simplicity of required OCR device design). For the numeric and uppercase character sets of OCR-A the emphasis is on OCR reading performance, while for OCR-B the emphasis is on conventional appearance. The objec- tive is to provide a choice for the user - optimized read

12、ing performance or conventional ap- pearance. The design of OCR-B is an outgrowth of European Computer Manufacturers Association Stan- dard ECMA-11 for the Alphanumeric Character Set OCR-B for Optical Recognition, November 1965, which was also published as character set OCR-B in IS0 (International O

13、rganization for Standardization) Recommendation R 1073-1969, Alphanumeric Character Sets for Optical Rec- ognition. In 1970 a joint ECMA/ANSI experts group undertook a revision of OCR-B for the pur- pose of improving OCR readability without affecting its conventional appearance. The revised version

14、of OCR-B that resulted differs from the November 1965 ECMA-11 and from the May 1969 IS0 versions in several respects: (1) a large number of changes have been made to the character shapes; (2) some characters have been added and others removed; (3) Size II has been dropped; and (4) a new Size IV, hav

15、ing the same centerline height to width aspect ratio as Size I, has been added. The revised OCR-B design described above is the basis for both American National Standard X3.49-1975 and the revised ECMA-11-1975. For the most part the character shapes defined in both of these standards are identical.

16、There are the following exceptions: (1) ECMA-11-1975 includes both a constant stroke-width and a letterpress version; Ameri- can National Standard X3.49-1975 includes only the constant stroke-width version. (2) ECMA-11-1975 has a Vertical Line and a Preprinted Long Vertical Mark; American National S

17、tandard X3.49-1975 has only a Long Vertical Mark. At the time of preparation of this standard, IS0 Technical Committee 97, Subcommittee 3 (ISO/TC 97/SC 3) on Character and Mark Recognition was in the process of revising IS0 R 1073 so that the IS0 version of OCR-B, ECMA-11-1975, and American National

18、 Standard X3.49- 1975 will all be in agreement. Suggestions for improvement of this standard will be welcome. They should be sent to the American National Standards Institute, 1430 Broadway, New York, N.Y. 10018. This standard was processed and approved for submittal to ANSI by American National Sta

19、n- dards Committee on Computers and Information Processing, X3. Committee approval of the standard does not necessarily imply that all committee members voted for its approval. At the time it approved this standard, the X3 Committee had the following members: J. F. Auwaerter, Chairman V. E. Henrique

20、s, Vice-chairman R. M. Brown, Secretary Organization Represented Name of Representative Addressograph Multigraph Corporation A. C. Brown Air Transport Association F. C. White R. H. Trenkamp (Alt) C. Hart (Alt) American Bankers Association. . M. E. McMahon A. Miller (Alt) Organization Represented Nam

21、e of Representative American Institute of Certified Public Accountants . N. Zakin C. A. Phillips (Alt) F. Schiff (Alt) J. C. Kountz (Alt) M. S. Malinconico (Alt) American Library Association J. R. Rizzolo American Newspaper Publishers Association. . W. D. Rinehart American Nuclear Society D. R. Vond

22、y American Society for Information Science . S. Furth American Society of Mechanical Engineers R. W. Rau Association for Computing Machinery . P. Skelly M. K. Butler (Alt) M. C. Kepplinger (Alt) R. T. Woythal (Alt) J. A. N. Lee (Alt) H. Thiess (Alt) Association for Educational Data Systems . A. K. S

23、wanson Association for Systems Management. . J. N. Gilbride R. Invin (Alt) Association of American Railroads . R. A. Petrash Association of Computer Programmers and Analysts . T. G. Grieb Association of Data Processing Service Organizations. J. B. Christiansen Burroughs Corporation E. Lohse J. F. Ka

24、lbach (Alt) Computer Industry Association . N. Ream A. G. W. Biddle (Alt) Control Data Corporation S. F. Buckland C. E. Cooper (Alt) Data Processing Management Association . A. E. Dubnow D. W. Sanford (Alt) Digital Equipment Corporation . D. L. Stone P. White (Alt) Edison Electric Institute . J. W.

25、Fish K. C. Adgate (Alt) Electronic Industries Association (Representation Vacant) A. M. Wilson (Alt) General Electric Company R. R. Hench J. K. Snell (Alt) General Services Administration. D. L. Shoemaker M. L. Burris (Alt) GUIDE International . T. E. Wiese B. R. Nelson (Alt) D. Stanford (Alt) G. Th

26、omas (Alt) Honeyweli Information Systems, Inc T. J. McNamara Institute of Electrical and Electronics Engineers, Communications Society G. E. Friend Institute of Electrical and Electronics Engineers, Computer Society G. C. Schutz Insurance Accounting and Statistical Association . W. Bregartner Intern

27、ational Business Machines Corporation . L. Robinson Joint Users Group. T. E. Wiese Life Offiie Management Association B. L. Neff Litton Industries . I. Danowitz G. W. Rosenthai (Alt) 1. R. Kerber (Alt) W. F. McClelland (Alt) L. Rodgers (Alt) A. J. Tufts (Alt) National Association of State Informatio

28、n Systems. . G. H. Roehm C. Vorlander (Alt) R. E. Rountree (Alt) National Bureau of Standards H. S. White, Jr National Machine Tool Builders Association. . O. A. Rodrques National Retail Merchants Association . I. Solomon NCR Corporation . R. J. Mindlin Ovetti Corporation of America. E. J. Almquist

29、Pitney Bowes, Inc . R. H. Fenn L. S. Schrager (Alt) A. R. Daniels (Ait) T. W. Kern (Alt) E. T. Warzecha (Alt) Organization Represented Name of Representative Printing Industries of America N. Scharpf Recognition Equipment Inc . H. F. Schantz E. Masten (Ait) W. E. Viering (Alt) J. E. French (Alt) SHA

30、RE Inc T. B. Steel, Jr R. H. Wahlen (Alt) Society of Certified Data Processors A. Taylor A. E. Dubnow (Alt) Systems Engineering Laboratories, Inc . O. Serlin M. Olson (Alt) Telephone Group . V. N. Vaughan, Jr S. M. Garland (Alt) J. C. Nelson (Alt) Scientific Apparatus Makers Association A. Savitsky

31、3M Company. . R. C. Smith UNIVAC, Division of Sperry Rand Corporation. . M. W. Bass U.S. Department of Defense . W. L. McGreer C. D. Card (Alt) W. B. Rinehuls (Alt) W. B. Robertson (Alt) Xerox Corporation J. L. Wheeler Subcommittee X3Al on Optical Character Recognition, which developed this standard

32、, had the following members: R. E. Schubert, Chairman M. A. Butterfield, Vice-chairman B. T. Daniels, Secretary G. R. Adams T. Adams L. M. Andrews A. J. Atrubin R. Baracka D. Bates G. M. Berkin W. C. Billings R. Bloss J. P. Boggins M. H. Bozarth, Jr A. C. Brown G. Brown H. F. Burkhard M. W. Burris K

33、. Bye L. Caiderone V. Carpano L. Dambrose C. W. Davidson A. F. Decker M. Dorochin H. Dragich C. L. Eadie J. E. Faldus D. Fehne1 H. S. Fitch J. J. Forsythe H. Freeman J. H. Freymeyer G. W. Gardner G. K. Godwin W. J. Goff C. A. Greathouse J. G. Griffis L. Griffith R. Griffith W. Grote A. Hamburgen J.

34、Hammons T. Hassell S. A. Hellewell G. Hennig E. Henrichon M. Hirsch W. E. Holmes S. Homa R. W. Hunt T. B. Janning P. T. Kirk C. Knoedel H. W. Kmser S. Lanzateila W. B. Lingo A. Lohan R. Maihofer B. GUStiM J. McCray S. McIntosh B. Marsden C. Marshal R. Mispley J. Nelson C. P. Newman P. Newman C. W. N

35、ewton T. A. Patcheii G. C. Pick H. L. Preble L. Richards D. B. Robinson L. Rolufs J. L. Rosenblum T. Sagar M. Samit H. F. Schantz J. C. Simons S. J. Tillis R. I. Verb R. Vergoz W. Viering B. J. Vincent M. Wlmer F. W. Wirdzek R. Worrai J. Yacyk Other persons who contributed to the development of this

36、 standard were: C. S. Adell J. P. Ancona P. E. Baetz T. C. Bagg K. Bol J. L. Crawford W. A. Dickerson, SI D. C. Friedman M. D. Hogan C. Jones A. M. Kader R. Krolak N. Lee J. L. Maddox D. Mandelson P. A. Mantek T. Peder H. W. Silsby O. C. Stokes B. Tafoya J. A. Warme Technical responsibility for the

37、development of this standard was assigned to X3A1 Working Group A on Character Sets and Shapes. During the development period the chairmen of this group were K. Bol and A. Hamburgen. The technical work was carried out by a subcommittee of Working Group A that had the following members: A. J. Atrubin

38、, Chairman R. E. Schubert, Former Chairman K. Bol, Former Chairman L. M. Andrews T. C. Bag G. Brown M. A. Butterfield B. T. Daniels M. Dorochin D. C. Friedman W. E. Holmes S. Homa S. Lanzateiia J. L. Rosenblum The following members of ECMA (European Computer Manufacturers Association) Technical Comm

39、ittee 4 on Optical Character Recognition participated with members of X3A1 in the ECMA/ANSI Experts Work Group on OCR-B meeting held in Paris on November 17-20,1970: C. L. Cooreman J. Dubos F. Demonte A. FrutigeI M. Nadler P. Schrer H. van Steenis W. R. Throssel The original illustration plates for

40、the OCR-B character shapes used in this standard were pre- pared by the European Computer Manufacturers Association and were made available through the courtesy and assistance of Secretary General Dara Hekimi. PAGE i . General 11 1.1 Scope 11 1.2 Purpose . 11 1.3 Application 11 2 . Standard Characte

41、rs 11 2.1 Character Shapes . 11 2.2 Character Sizes 12 2.3 Character Repertoire 12 2.4 Properties of Special Characters . 53 2.5 Relative Character Positioning 54 3 . Procedure for Obtaining Precise, Stable Copies of OCR-B Characters 55 Tables Contents Table 1 Repertoire for OCR Usage 13-15 Table 2

42、Extended Repertoire . 16 Table 3 Dimensions of the Character Space 54 Table 4 Dimensions of Character Erase . 54 Figures Fig . 1 Fig . 2 Fig . 3 Fig . 4 Fig . 5 Fig . 6 Fig . 7 Fig . 8 Fig . 9 Fig . 10 Fig . 11 Fig . 12 Fig . 13 Fig . 14 Fig . 15 Fig . 16 Fig . 17 Fig . 18 Fig . 19 Fig . 20 Fig . 21

43、 Fig . 22 Fig . 23 Fig . 24 Fig . 25 Fig . 26 Fig . 28 Fig . 29 Fig . 30 Fig . 31 Fig . 32 Fig . 33 Fig . 34 Fig . 27 Digit One (RDN 1) 17 DigitTwo(RDN2) 17 Digit Three (RDN 3) . 17 Digit Four (RDN 4) 17 Digit Five (RDN 5) 18 Digit Six (RDN 6) . 18 Digit Seven (RDN 7) . 18 DigitEight(RDN8) . 18 Digi

44、t Nine (RDN 9) 19 Digit Zero (RDN 10) . 19 Capital Letter A (RDN 11) . 19 Capital Letter B (RDN 12) . 19 Capital Letter C (RDN 13) . 20 Capital Letter D (RDN 14) . 20 Capital Letter E (RDN 15) . 20 Capital Letter F (RDN 16) . 20 Capital Letter G (RDN 17) . 21 Capital Letter H (RDN 18) . 21 Capital L

45、etter I (RDN 19) 21 Capital Letter J (RDN 20) . 21 Capital Letter K (RDN 21) . 22 Capital Letter L (RDN 22) . 22 Capital Letter M (RDN 23) . 22 Capital Letter N (RDN 24) . 22 Capital Letter O (RDN 25) . 23 Capital Letter P (RDN 26) . 23 Lapital Letter Q (RDN 27) . 23 Capital Letter R (RDN 28) . 23 C

46、apital Letter S (RDN 29) . 24 Capital Letter T (RDN 30) . 24 Capital Letter U (RDN 31) . 24 0 . Capital Letter V (RDN 32) . 24 Capital Letter W (RDN 33) . 25 Capital Letter X (RDN 34) . 25 SECTION PAGE Fig . 35 Capital Letter Y (RDN 35) . 25 Fig . 36 Capital Letter Z (RDN 36) . 25 Fig . 37 Small Let

47、ter A (RDN 37) 26 Fig . 38 Small Letter B (RDN 38) i . 26 Fig . 39 Small Letter C (RDN 39) 26 Fig . 40 Small Letter D (RDN 40) 26 Fig . 41 Small Letter E (RDN 41) 27 Fig . 43 Small Letter G (RDN 43) 27 Fig . 44 Small Letter H (RDN 44) 27 Fig . 45 Small Letter I (RDN 45) 28 Fig . 46 Small Letter J (R

48、DN 46) 28 Fig . 47 Small Letter K (RDN 47) 28 Fig . 48 SmaU Letter L (RDN 48) 28 Fig . 49 Small Letter M (RDN 49) 29 Fig . 50 Small Letter N (RDN 50) 29 Fig . 51 Small Letter O (RDN 51) 29 Fig . 52 Small Letter P (RDN 52) 29 Fig . 53 Small Letter Q (RDN 53) 30 Fig . 54 Small Letter R (RDN 54) 30 Fig

49、 . 55 Small Letter S (RDN 55) 30 Fig . 56 Small Letter T (RDN 56) 30 Fig . 57 Small Letter U (RDN 57) 31 Fig . 58 Small Letter V (RDN 58) 31 Fig . 59 Small Letter W (RDN 59) 31 Fig . 60 Small Letter X (RDN 60) 31 Fig . 61 Small Letter Y (RDN 61) 32 Fig . 62 Small Letter Z (RDN 62) 32 Fig . 63 Asterisk (RDN 63) 32 Fig . 64 Plus Sign (RDN 64) 32 Fig . 65 Hyphen (RDN 65) 33 Fig . 66 Equals Sign (RDN 66) 33 Fig . 42 Small Letter F (RDN 42) 27 Fig . 67 Slant (RDN 67) 33 Fig . 68 Period (RDN 68) 33 Fig . 69 Comma (RDN69) . 34 Fig . 70 Colon (RDN 70) 34 Fig . 72 Quotation Mark (RDN 72) . 34 Fig .